[EDIT] added evrything to namespace, also fixed includes

src/computervision/BackgroundRemover.cpp

@@ -1,10 +1,10 @@
 #include "BackgroundRemover.h"
-#include"opencv2\opencv.hpp"
 
 /*
  Author: Pierfrancesco Soffritti https://github.com/PierfrancescoSoffritti
 */
-
+namespace computervision
+{
 	BackgroundRemover::BackgroundRemover(void) {
 		background;
 		calibrated = false;
@@ -56,3 +56,4 @@ void BackgroundRemover::removeBackground(Mat input, Mat background) {
 			}
 		}
 	}
+}

src/computervision/BackgroundRemover.h

@@ -1,11 +1,11 @@
 #pragma once
-
+#include"opencv2\opencv.hpp"
-#include<opencv\cv.h>
+#include <opencv2/imgproc\types_c.h>
-
 /*
  Author: Pierfrancesco Soffritti https://github.com/PierfrancescoSoffritti
 */
-
+namespace computervision
+{
 using namespace cv;
 using namespace std;
 
@@ -13,12 +13,13 @@ class BackgroundRemover {
 	public:
 		BackgroundRemover(void);
 		void calibrate(Mat input);
-	Mat BackgroundRemover::getForeground(Mat input);
+		Mat getForeground(Mat input);
 
 	private:
 		Mat background;
 		bool calibrated = false;
 
 		Mat getForegroundMask(Mat input);
-	void BackgroundRemover::removeBackground(Mat input, Mat background);
+		void removeBackground(Mat input, Mat background);
 	};
+}

src/computervision/FaceDetector.cpp

@@ -1,10 +1,11 @@
 #include "FaceDetector.h"
-#include"opencv2\opencv.hpp"
+
 
 /*
  Author: Pierfrancesco Soffritti https://github.com/PierfrancescoSoffritti
 */
-
+namespace computervision
+{
 	Rect getFaceRect(Mat input);
 
 	String faceClassifierFileName = "../res/haarcascade_frontalface_alt.xml";
@@ -49,3 +50,4 @@ Rect getFaceRect(Mat input) {
 		else
 			return Rect(0, 0, 1, 1);
 	}
+}

src/computervision/FaceDetector.h

@@ -1,7 +1,7 @@
 #pragma once
-
+#include"opencv2\opencv.hpp"
-#include<opencv\cv.h>
+#include <opencv2\imgproc\types_c.h>
-
+#include <opencv2/objdetect/objdetect_c.h>
 /*
  Author: Pierfrancesco Soffritti https://github.com/PierfrancescoSoffritti
 */
@@ -9,8 +9,11 @@
 using namespace cv;
 using namespace std;
 
+namespace computervision
+{
 	class FaceDetector {
 	public:
 		FaceDetector(void);
 		void removeFaces(Mat input, Mat output);
 	};
+}

src/computervision/FingerCount.cpp

@@ -12,6 +12,8 @@
 #define BOUNDING_RECT_FINGER_SIZE_SCALING 0.3
 #define BOUNDING_RECT_NEIGHBOR_DISTANCE_SCALING 0.05
 
+namespace computervision
+{
 	FingerCount::FingerCount(void) {
 		color_blue = Scalar(255, 0, 0);
 		color_green = Scalar(0, 255, 0);
@@ -286,3 +288,4 @@ void FingerCount::drawVectorPoints(Mat image, vector<Point> points, Scalar color
 				putText(image, to_string(i), points[i], FONT_HERSHEY_PLAIN, 3, color);
 		}
 	}
+}

src/computervision/FingerCount.h

@@ -1,11 +1,14 @@
 #pragma once
 
-#include "opencv/cv.h"
+#include "opencv2/core.hpp"
+#include <opencv2/imgproc/types_c.h>
 
 /*
  Author: Nicol<6F> Castellazzi https://github.com/nicast
 */
 
+namespace computervision
+{
 	using namespace cv;
 	using namespace std;
 
@@ -30,3 +33,4 @@ private:
 		double findPointsDistanceOnX(Point a, Point b);
 		void drawVectorPoints(Mat image, vector<Point> points, Scalar color, bool with_numbers);
 	};
+}

src/computervision/ObjectDetection.cpp

@@ -1,6 +1,13 @@
+#include "opencv2/opencv.hpp"
+#include "opencv2/imgcodecs.hpp"
+#include "opencv2/imgproc.hpp"
+#include "opencv2/videoio.hpp"
+#include <opencv2/highgui.hpp>
+#include <opencv2/video.hpp>
+
 #include "ObjectDetection.h"
 #include "ObjectDetection.h"
-//#include "BackgroundRemover.h"
+#include "BackgroundRemover.h"
 #include "SkinDetector.h"
 #include "FaceDetector.h"
 #include "FingerCount.h"
@@ -8,10 +15,11 @@
 namespace computervision
 {
 	cv::VideoCapture cap(0);
+
 	cv::Mat img, imgGray, img2, img2Gray, img3, img4;
 
 	Mat frame, frameOut, handMask, foreground, fingerCountDebug;
-	//BackgroundRemover backgroundRemover;
+	BackgroundRemover backgroundRemover;
 	SkinDetector skinDetector;
 	FaceDetector faceDetector;
 	FingerCount fingerCount;
@@ -21,15 +29,24 @@ namespace computervision
 	{
 	}
 
-	void ObjectDetection::Init() 
+	bool ObjectDetection::Init() 
 	{
+		if (!cap.isOpened()) {
+			cout << "Can't find camera!" << endl;
+			return false;
+		}
+
 		cap.read(frame);
+		frameOut = frame.clone();
+
 		skinDetector.drawSkinColorSampler(frameOut);
 
 		foreground = backgroundRemover.getForeground(frame);
 
 		faceDetector.removeFaces(frame, foreground);
 		handMask = skinDetector.getSkinMask(foreground);
+
+		return true;
 	}
 
 	void ObjectDetection::readWebcam()

src/computervision/ObjectDetection.h

@@ -17,6 +17,7 @@ namespace computervision
 
 	public:
 		ObjectDetection();
+		bool Init();
 		void readWebcam();
 		void showWebcam();
 		void calculateDifference();

src/computervision/SkinDetector.cpp

@@ -1,10 +1,11 @@
 #include "SkinDetector.h"
-#include"opencv2\opencv.hpp"
 
 /*
  Author: Pierfrancesco Soffritti https://github.com/PierfrancescoSoffritti
 */
 
+namespace computervision
+{
 	SkinDetector::SkinDetector(void) {
 		hLowThreshold = 0;
 		hHighThreshold = 0;
@@ -101,3 +102,4 @@ void SkinDetector::performOpening(Mat binaryImage, int kernelShape, Point kernel
 		Mat structuringElement = getStructuringElement(kernelShape, kernelSize);
 		morphologyEx(binaryImage, binaryImage, MORPH_OPEN, structuringElement);
 	}
+}

src/computervision/SkinDetector.h

@@ -1,11 +1,15 @@
 #pragma once
 
-#include<opencv\cv.h>
+#include<opencv2\core.hpp>
-
+#include <opencv2/imgcodecs.hpp>
+#include <opencv2/imgproc.hpp>
+#include <opencv2/imgproc/types_c.h>
 /*
  Author: Pierfrancesco Soffritti https://github.com/PierfrancescoSoffritti
 */
 
+namespace computervision
+{
 	using namespace cv;
 	using namespace std;
 
@@ -30,5 +34,6 @@ private:
 		Rect skinColorSamplerRectangle1, skinColorSamplerRectangle2;
 
 		void calculateThresholds(Mat sample1, Mat sample2);
-	void SkinDetector::performOpening(Mat binaryImage, int structuralElementShapde, Point structuralElementSize);
+		void performOpening(Mat binaryImage, int structuralElementShapde, Point structuralElementSize);
 	};
+}

wk2_fps.vcxproj

@@ -37,7 +37,7 @@
   <ItemGroup>
     <ClInclude Include="src\computervision\FaceDetector.h" />
     <ClInclude Include="src\computervision\FingerCount.h" />
-    <ClInclude Include="src\computervision\Header.h" />
+    <ClInclude Include="src\computervision\BackgroundRemover.h" />
     <ClInclude Include="src\computervision\SkinDetector.h" />
     <ClInclude Include="src\computervision\ObjectDetection.h" />
     <ClInclude Include="src\entities\camera.h" />

wk2_fps.vcxproj.filters

@@ -101,7 +101,7 @@
     <ClInclude Include="src\computervision\FaceDetector.h">
       <Filter>Header Files</Filter>
     </ClInclude>
-    <ClInclude Include="src\computervision\Header.h">
+    <ClInclude Include="src\computervision\BackgroundRemover.h">
       <Filter>Header Files</Filter>
     </ClInclude>
   </ItemGroup>